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SO4<2->/metal oxide-loaded filler for desorbing CO2 via amine solution and preparation method of SO4<2->/metal oxide-loaded filler

An oxide and amine solution technology, applied in chemical instruments and methods, chemical/physical/physical-chemical processes, separation methods, etc. The effect of reducing heat consumption, lowering desorption temperature, and accelerating speed

Pending Publication Date: 2021-08-31
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the catalyst and packing are arranged separately in the absorption tower, it may cause problems such as insufficient space of the absorption tower, weight of internal parts, and large resistance to gas-liquid flow.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The present invention is used to desorb CO from amine solution 2 load SO 4 2- The preparation method of the filler of / metal oxide comprises the following steps:

[0029] 1) Remove impurities on the surface of the porous ceramic filler, use oxalic acid solution with a mass percentage of 50% to clean the porous ceramic filler, condense and reflux and boil for 1 hour, wash with deionized water after cooling until the pH of the washing solution is 7, and then place it at 110 Dry at ℃ for 12 hours;

[0030] 2) Obtaining a metal M nitrate solution with a mass percentage concentration of 5-20%; obtaining an ammonium sulfate solution with a mass percentage concentration of 5-20%;

[0031] 3) Immerse the porous ceramic filler in the metal M nitrate solution, then ultrasonically impregnate and dry for 2-4 times, wherein the time for ultrasonic impregnation is 1h-3h, the drying temperature is 110°C, and the drying time is 12h; then in an inert gas Calcined at 500-700°C for 2-4...

Embodiment 1

[0035] The present invention is used to desorb CO from amine solution 2 load SO 4 2- The filler of / metal oxide comprises porous ceramic filler and the catalytically active component that is attached on the porous ceramic filler, and described catalytically active component comprises sulfate root SO 4 2- and metal oxide M x o y .

[0036] The type of porous ceramic packing is Pall ring.

[0037] metal oxide M x o y for Al 2 o 3 .

[0038] The present invention is used to desorb CO from amine solution 2 load SO 4 2- The preparation method of the filler of / metal oxide comprises the following steps:

[0039] 1) Remove impurities on the surface of the porous ceramic filler, use oxalic acid solution with a mass percentage of 50% to clean the porous ceramic filler, condense and reflux and boil for 1 hour, wash with deionized water after cooling until the pH of the washing solution is 7, and then place it at 110 Dry at ℃ for 12 hours;

[0040] 2) Obtaining a metal M ni...

Embodiment 2

[0045] The present invention is used to desorb CO from amine solution 2 load SO 4 2- The filler of / metal oxide comprises porous ceramic filler and the catalytically active component that is attached on the porous ceramic filler, and described catalytically active component comprises sulfate root SO 4 2- and metal oxide M x o y .

[0046] The type of porous ceramic packing is Pall ring.

[0047] metal oxide M x o y ZrO 2 .

[0048] The present invention is used to desorb CO from amine solution 2 load SO 4 2- The preparation method of the filler of / metal oxide comprises the following steps:

[0049] 1) Remove impurities on the surface of the porous ceramic filler, use oxalic acid solution with a mass percentage of 50% to clean the porous ceramic filler, condense and reflux and boil for 1 hour, wash with deionized water after cooling until the pH of the washing solution is 7, and then place it at 110 Dry at ℃ for 12 hours;

[0050] 2) Obtaining a metal M nitrate so...

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PUM

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Abstract

The invention discloses a SO4<2-> / metal oxide-loaded filler for desorption of CO2 via an amine solution and a preparation method thereof, the SO4<2-> / metal oxide-loaded filler comprises a porous ceramic filler and catalytic active components attached to the porous ceramic filler, wherein the catalytic active components comprise sulfate SO4<2-> and a metal oxide MxOy. The filler can effectively solve various problems caused by respectively arranging a catalyst and the filler in an absorption tower.

Description

technical field [0001] The invention belongs to the technical field of greenhouse gas carbon dioxide emission reduction, and relates to an amine solution for desorbing CO 2 load SO 4 2- / Metal oxide filler and preparation method thereof. Background technique [0002] Flue gas decarbonization technology includes chemical absorption method, variable temperature and pressure swing adsorption and other methods. Among them, chemical absorption method is a relatively mature decarbonization technology at present. It generally uses amine solution to absorb carbon dioxide in flue gas, and then through thermal desorption. way to make CO 2 released, so that the CO in the flue gas 2 purification and separation. The chemical absorption method has disadvantages such as high system energy consumption, which limits its large-scale industrial application. [0003] Patents CN109092020A, CN102350180B, etc. adopt the carbon dioxide regeneration process system method of new absorbent to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/30B01D53/86B01D53/78B01D53/62B01J27/053B01J27/055
CPCB01J19/30B01D53/86B01D53/78B01D53/62B01J27/053B01J27/055B01D2258/0283B01D2257/504B01D2251/80B01D2255/2092B01D2255/20715B01D2255/2065B01D2255/20761Y02A50/20Y02C20/40
Inventor 蔡铭程广文杨嵩赵瀚辰杨成龙李阳郭中旭付康丽
Owner XIAN THERMAL POWER RES INST CO LTD
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